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1.
戊戌变法失败后,不少立宪派变成了革命派,即使那些仍然坚持君主立宪者,对革命派的态度已开始发生变化,多了一些同情和包容。在国内外压力下,西太后被迫搞假立宪改革,然其大权在握,不能取信于立宪派。光绪帝死后,立宪派无君可忠了。宣统小皇帝继位后,实行君主立宪制的局面并未发生实质的改变.激起了立宪派的不满。武昌起义后,立宪派改变了自己的政治立场,放弃了一贯坚持的君主立宪的主张,加入了革命洪流,积极参与推翻清王朝的斗争,为推动中国社会不断前进做出了重要的贡献。  相似文献   

2.
碳酸钠半微量合成的优化   总被引:1,自引:0,他引:1  
本文论述了以粗盐和碳酸氢铵为原料,经过粗盐的提纯,复分解等系列反应,以半微量的操作方法,合成碳酸钠。减少了药品用量,缩短了反应时间,降低了环境污染,严格训练了学生的操作技能,使学生的综合能力得到较大的提高。  相似文献   

3.
发展循环经济促进可持续发展   总被引:10,自引:0,他引:10  
于萍 《天津科技》2004,31(6):25-27
列举了发达国家为了经济的可持续发展,通过建立法律法规和优惠政策,保证循环经济的发展,促进了这些国家再生资源产业发展的事实和数据,分析了造成我国目前环境问题的成因,阐述了我国发展循环经济的重要意义,并提出了发展循环经济,促进可持续发展的建议。  相似文献   

4.
本文介绍的微机控制系统,采用了Bitbus,大电流阵列驱动器,E ̄2PROM等先进手段,简化了系统结构,增强了系统的抗干扰能力及可靠性,实现了参数在线修改,提高了产品质量,使橡胶硫化控制提高到一个新的水平。  相似文献   

5.
高丽凤 《科技信息》2009,(35):105-105,97
古典主义时期的艺术,突出发展的是美术和音乐,但美术的发展要早于音乐,特别使得建筑、绘画、雕塑发展达到了一个新阶段.各种风格不断涌现出来,到欧洲资本主义产生时期,美术具有了时代的特点,形式和内容高度统一,这也使古典音乐受其影响,在这个基础之上,古典音乐的发展可以说达到了一个黄金时期,像贝多芬、莫扎特等著名作曲家的出现,促进了古典音乐的发展进程。到了19世纪新古典音乐的发展以大大超过了这一时期美术的发展,不管怎样,在那个革命、上升的时代,古典艺术以其辉煌灿烂的一页,影响了当代艺术的发展。  相似文献   

6.
随着社会的发展进步,人民群众对教育尤其是基础教育的要求越来越高。而多媒体技术的不断推陈出新,把生活引入课堂,改变了原有的课堂结构,为学生创设了各种各样的教学情境,拓展了他们的思维,促进了他们个性化的审美体验,改变了机械、粗糙、繁琐的复习与练习方式,拓宽了他们的学习空间,引导学生建立起自主、合作、探究的学习方式,催生了课堂结构的变化,为学生创建了一个开放而有活力的语文课堂。  相似文献   

7.
针对温吉桑油田的地质特点,推广使用了低固相聚合物钻井液,极大地提高了喷射钻井的效果,提高了钻井速度,减少了井下复杂情况,缩短了钻井周期,提高了井眼质量和固井质量,降低了钻井液成本和钻井总成本.  相似文献   

8.
《广东科技》2007,(5):I0001
事实上,广东许多民营企业已经开展了知识产权工作,一些企业成立了知识产权管理部门,逐步建立起知识产权管理制度,开展知识产权管理和保护工作,例如,在广东已有一批企业拥有了自己的注册商标和专利,大量的企业开展了企业内部的知识产权培训,而有的企业甚至还建立了适合本企业的专题专利数据库,  相似文献   

9.
《少儿科技》2012,(10):35-35
开学了,莉莉成了一名初中生。可她最近比较烦,同学们见了她,有的对她指指点点,有的起哄让她请客,因为她的照片被印在了大家用的课程表上。 这得从两年前说起。可爱的莉莉一直是大家眼中的“小公主”,住在对门的马叔叔开了一家文具公司,两年前和莉莉爸爸商量,想使用一些莉莉的照片,让莉莉做公司的形象代言人。莉莉爸爸虽然高兴,但担心时间长了会影响孩子成长,就和对方签了两年合同,注明有效期到今年2月。  相似文献   

10.
我们开展题为“阅读中国经典,与学生积淀传统文化,以及民族情感研究”的师生读经典诵经典活动以来,对教师而言,增强了人文底蕴.树立了高尚的师德,提高了语文教学水平,丰富了教育生活。对学生而言,促进了“精神发育”,培养了优良品德,提高了能力。  相似文献   

11.
Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.  相似文献   

12.
何延凌 《科技信息》2008,(4):258-258
Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women's language from these perspectives: pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women's language, more attention should be paid to language use in social context. What's more, the linguistic phenomena in a speaking community can be understood more thoroughly.  相似文献   

13.
王慧 《科技信息》2008,(10):240-240
Wuthering Heights, Emily Bronte's only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.  相似文献   

14.
The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.  相似文献   

15.
理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。  相似文献   

16.
As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.  相似文献   

17.
正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-  相似文献   

18.
We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-  相似文献   

19.
正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that  相似文献   

20.
For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the  相似文献   

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